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PDF AP3202 Data sheet ( Hoja de datos )
| Número de pieza | AP3202 | |
| Descripción | 2A Asynchronous DC-DC Buck Converter | |
| Fabricantes | BCD | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP3202 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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Preliminary Datasheet
380kHz, 2A Asynchronous DC-DC Buck Converter
AP3202
General Description
The AP3202 is a 380kHz fixed frequency, current
mode, PWM buck (step-down) DC-DC converter,
capable of driving a 2A load with high efficiency,
excellent line and load regulation. The device
integrates N-channel power MOSFET switch with
low on-resistance. Current mode control provides fast
transient response and cycle-by-cycle current limit.
A standard series of inductors are available from
several different manufacturers optimized for use
with the AP3202. This feature greatly simplifies the
design of switch-mode power supplies.
This IC is available in SOIC-8 package.
Features
• Input Voltage Range: 4.75V to 18V
• Fixed 380kHz Frequency
• High Efficiency: up to 93%
• Output Current: 2A
• Current Mode Control
• Built-in Over Current Protection
• Built-in Thermal Shutdown Function
• Built-in UVLO Function
• Built-in Over Voltage Protection
• Built-in Soft-start
Applications
• LCD TV
• Set Top Box
• Portable DVD
• Digital Photo Frame
Mar. 2011 Rev. 1. 2
SOIC-8
Figure 1. Package Type of AP3202
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
380kHz, 2A Asynchronous DC-DC Buck Converter
AP3202
Electrical Characteristics
VIN=VEN=12V, VOUT=3.3V, unless otherwise specified. Specification with standard typeface are for
TA=25oC, and those in boldface type apply over the full operating temperature range (TA=-40oC to 85oC)
Parameter
Symbol
Input Voltage
Quiescent Current
Shutdown Supply Current
Feedback Voltage
Feedback Over Voltage
Threshold
Feedback SCP Voltage Threshold
Feedback Bias Current
High-side Switch On-resistance (Note 2)
Low-side Switch On-resistance (Note 2)
VIN
IQ
ISHDN
VFB
VFBOV
VFBSCP
IFB
RDSONH
RDSONL
High-side Switch Leakage Current
ILEAKH
High-side Switch Current Limit
ILIMH
Low-side Switch Current Limit
ILIML
EN Pin Threshold
VENH
VENL
EN Pull-up Current
IEN-PH
Input UVLO Threshold
VUVLO
Input UVLO Hysteresis
VHYS
Oscillator Frequency
Short Circuit Oscillator
Frequency
FOSC1
FOSC2
Maximum Duty Cycle
DMAX
Minimum Duty Cycle
DMIN
Error Amplifier Voltage Gain (Note 3)
AEA
Error Amplifier Transconductance
COMP to Current Sense
Transconductance
GEA
GCS
Thermal Shutdown (Note 3)
TOTSD
Thermal Shutdown Hysteresis (Note 3)
THYS
Soft-start Time (Note 3)
Note
2:
RDSON=
VSW1
ISW1
-
-
VSW2
ISW2
Note 3: Not tested, guaranteed by design.
tSS
Conditions
VFB=1.4V, VEN=2V
VEN=0V
VFB=1V
ISW=0.5A
ISW=0.05A
VIN=18V, VEN=0V
VSW=0V
From drain to source
VEN=0V
VIN Rising
VFB=1.0V
VFB=1.5V
IOUT=0A
Min
4.75
1.185
-0.1
2.8
1.5
3.5
Typ
1.0
1
1.222
1.48
0.6
0.22
10
0.1
3.8
0.15
1.0
3.9
0.3
380
90
90
400
700
2.4
160
30
500
Max
18
1.5
10
1.258
0.1
10
Unit
V
mA
µA
V
V
V
µA
Ω
Ω
µA
A
A
V
0.5
µA
4.4 V
V
kHz
kHz
%
0%
V/V
µA/V
A/V
ºC
ºC
µs
Mar. 2011 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
5 Page 
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
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11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AP3202.PDF ] | |
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